Data-aided channel estimation for turbo-PIC MIMO detectors
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We consider data-aided channel estimation for multiple input multiple output (MIMO) systems when iterative parallel interference cancellation (PIC) is performed for signal detection. We compare some data-aided channel estimation methods based on expectation maximization (EM) algorithm or on hard estimated transmit symbols. In particular, we propose a modified EM-based approach and show that when few iterations are to be performed, it provides considerable performance improvement. © 2006 IEEE.
author list (cited authors)
Khalighi, M., Boutros, J. J., & Helard, J.